Efficiency of Selected Bacteria on Bioremediation of Mercury in Soil
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Abstract
This research was studied the efficiency study of selective microbes to reduce mercury contaminated in soil. This research was examined the physical and chemical properties in the soil and investigated the efficiency of mercury reduction in soil. The experimental design was varied the concentration of mercury rates within 15 days. Soil samples were investigated by gas chromatography (GC) technique and calculated the efficiency of mercury reduction. The results showed that soil properties were as silty in texture and 18 grams per kilograms (g/kg) of organic matter that medium level. Soil pH was 6.56 that weak acid. Regarding mercury contamination reduction, 5 g of selective microbes and 120 milligrams per kilograms (mg/kg) of mercury concentration was found the greatest removal efficiency of mercury at 43.07%. Followed by 5 grams of selective microbes with 240 mg/kg of mercury concentration, could remove an efficiency of mercury at 42.13% of mercury, respectively. Therefore, this research can lead to the management of areas with mercury residues, including reducing heavy metal contamination in the food chain.
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